Safety
On Apr 22, 2025, the FDA warned about compounded topical finasteride sold by compounders and telemedicine platforms. It had 32 adverse event reports from 2019 to 2024, including erectile dysfunction, anxiety, suicidal ideation, depression, brain fog, insomnia, decreased libido and testicular pain, and most reports said the problems continued after stopping. Topical products can transfer to others, so keep treated skin away from women who are or may be pregnant. Scalp irritation, redness, dryness and burning can occur.
Talk to a licensed clinician about your health history and every medication you take before you start.
Legal status
Prescription only; compounded and not FDA-approved, prescribed off-label. Topical finasteride is prepared by a compounding pharmacy for an individual prescription. Compounded products are not FDA-approved, and the FDA does not review them for safety, effectiveness or quality. Its use for hair loss is off-label: a use the FDA label does not cover, which a clinician may still choose. Topical finasteride is compounded and not FDA-approved. A licensed pharmacy may compound it for an individual prescription, but the FDA’s Apr 22, 2025 alert names telemedicine platforms that market it, so we list it only with that warning.
What topical finasteride is
Topical finasteride contains finasteride. Every topical finasteride sold by the providers we track is compounded and mixed with minoxidil, sometimes with other ingredients.
Dosing
Spray, solution, serum or gel applied to the scalp, usually once a day. Set by the prescriber and the compounding pharmacy; strengths and ingredients vary by product.
How well it works
In a 24-week European trial of 458 men, a 0.25% finasteride spray (not sold in the US) raised hair counts by 20.2 hairs vs 6.7 on placebo, similar to oral finasteride. It lowered blood DHT by 34.5%, against 55.6% for the tablet. US compounded products were not part of that trial. Individual results vary.
Topical finasteride cost
Compounded topical finasteride and minoxidil costs $35 to $63.20 a month at the providers that publish a monthly price, as of October 2026. For the steps, read How to get a finasteride prescription online.